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\bibcite{Blum:98}{\citename {Blum and Mitchell}1998}
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\bibcite{Pierce:01}{\citename {Pierce and Cardie}2001}
\bibcite{Yarowsky:95}{\citename {Yarowsky}1995}
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\bibcite{Chan:04}{\citename {Chan \bgroup et al.\egroup }2004}
\bibcite{Jun:11}{\citename {Jun Du \bgroup et al.\egroup }2011}
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\newlabel{sec:conclusion}{{6}{9}}
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\bibcite{Fujita:02}{\citename {Dasgupta \bgroup et al.\egroup }2002}
\bibcite{Abney:02}{\citename {Abney}2002}
